A horrified Brooklyn family must wait another week to learn why their adorable – and seemingly healthy – twin babies died suddenly Thursday.

Autopsies on Ises and Moorfiyah Mathurin were inconclusive, a spokeswoman for the city’s medical examiner said yesterday. Scientists will dig deeper into the circumstances leading to the babies’ deaths and test their brain tissue and blood for poisons.

Distraught family members huddled together in their Brownsville apartment yesterday, waiting in vain for word on what killed the 3-month-old Brooklyn babies, who had been napping when their mother, Ingrid Rosier, 21, found them unconscious.

“She loved the babies so much, and the father loved the babies,” said Rosier’s father, Ernest Rosier, 51. “It’s the first time, I saw a father cry like that for a baby.”

Ingrid Rosier found one baby dead and the other dying at around noon on Thursday, several hours after feeding them a breakfast of soy milk and cornmeal and tucking them in for a nap.

“She’s doing all right,” her father said. “But she’s afraid to stay in the house because of the death of the two babies. When she looks at the room, she feels sad and doesn’t want to stay here.”

Rosier and her husband, Steron Mathurin, 20, a St. Lucia native, feed soy milk and cornmeal to their son, 2, with no problems, her dad said.

At the hospital, doctors took X-rays of both babies and found nothing suggesting they’d choked, he added. They also found no signs of abuse.

“Nothing has been ruled out or ruled in,” said Grace Brugess, a Medical Examiner’s Office spokeswoman.

On Thursday, uniformed cops yanked all the Goya cornmeal and Eden Soy Extra Milk off shelves at the two C-Town supermarkets where the family shops.

At the C-Town on East 96th Street, near the family’s home, manager Dario Tineo said he found it hard to believe the food was tainted.

“It’s something people use on an almost daily basis. We’ve never had a problem,” he said.

Michael Potter, president of Eden Foods, insisted his soy milk couldn’t have killed the babies because each batch goes through extensive quality checks.

There have been no other complaints or problems with that batch of soy milk, he said.

“This stuff didn’t come from the backwoods,” Potter said. “It came from a sophisticated, modern food facility.”

A spokesman for Goya Foods said the company learned of the tragedy only yesterday and had no comment. “We sympathize with the family’s loss,” Rafael Toro said.